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Prestige 2602R Series User’s Guide
Chapter 13 Firewall Configuration
165
13.11 Anti-Probing
If an outside user attempts to probe an unsupported port on your Prestige, an ICMP response
packet is automatically returned. This allows the outside user to know the Prestige exists. The
Prestige supports anti-probing, which prevents the ICMP response packet from being sent.
This keeps outsiders from discovering your Prestige when unsupported ports are probed.
Internet Control Message Protocol (ICMP) is a message control and error-reporting protocol
between a host server and a gateway to the Internet. ICMP uses Internet Protocol (IP)
datagrams, but the messages are processed by the TCP/IP software and directly apparent to the
application user.
Click
Firewall
in the navigation panel and click
Anti Probing
to display the screen as shown.
SNMP-TRAPS (TCP/
UDP:162)
Traps for use with the SNMP (RFC:1215).
SQL-NET(TCP:1521)
Structured Query Language is an interface to access data on many
different types of database systems, including mainframes, midrange
systems, UNIX systems and network servers.
SSDP(UDP:1900)
Simple Service Discovery Protocol (SSDP) is a discovery service
searching for Universal Plug and Play devices on your home network
or upstream Internet gateways using DUDP port 1900.
SSH(TCP/UDP:22)
Secure Shell Remote Login Program.
STRMWORKS(UDP:1558)
Stream Works Protocol.
SYSLOG(UDP:514)
Syslog allows you to send system logs to a UNIX server.
TACACS(UDP:49)
Login Host Protocol used for (Terminal Access Controller Access
Control System).
TELNET(TCP:23)
Telnet is the login and terminal emulation protocol common on the
Internet and in UNIX environments. It operates over TCP/IP networks.
Its primary function is to allow users to log into remote host systems.
TFTP(UDP:69)
Trivial File Transfer Protocol is an Internet file transfer protocol similar
to FTP, but uses the UDP (User Datagram Protocol) rather than TCP
(Transmission Control Protocol).
VDOLIVE(TCP:7000)
Another videoconferencing solution.
Microsoft RDP(TCP:3389)
Microsoft's Remote Desktop Protocol allows you to access a computer
through the Internet in order to work with its files programs and
resources.
VNC(TCP:5900)
Virtual Network Computing is a remote display system that allows you
to view a computer's 'desktop' environment through the Internet.
NTP(TCP/UDP:123)
Network Time Protocol is used in synchronizing the time of computer
clocks.
Table 47
Predefined Services (continued)
SERVICE
DESCRIPTION
Содержание Prestige 2602R Series
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Страница 23: ...Prestige 2602R Series User s Guide Table of Contents 23 Index 439...
Страница 24: ...Prestige 2602R Series User s Guide 24 Table of Contents...
Страница 32: ...Prestige 2602R Series User s Guide 32 List of Figures...
Страница 40: ...Prestige 2602R Series User s Guide 40 Introduction to DSL...
Страница 50: ...Prestige 2602R Series User s Guide 50 Chapter 1 Getting To Know Your Prestige...
Страница 56: ...Prestige 2602R Series User s Guide 56 Chapter 2 Introducing the Web Configurator...
Страница 90: ...Prestige 2602R Series User s Guide 90 Chapter 5 WAN Setup...
Страница 102: ...Prestige 2602R Series User s Guide 102 Chapter 6 Network Address Translation NAT Screens...
Страница 134: ...Prestige 2602R Series User s Guide 134 Chapter 11 Time and Date...
Страница 148: ...Prestige 2602R Series User s Guide 148 Chapter 12 Firewalls...
Страница 170: ...Prestige 2602R Series User s Guide 170 Chapter 13 Firewall Configuration...
Страница 178: ...Prestige 2602R Series User s Guide 178 Chapter 15 Remote Management Configuration...
Страница 192: ...Prestige 2602R Series User s Guide 192 Chapter 16 Universal Plug and Play UPnP...
Страница 214: ...Prestige 2602R Series User s Guide 214 Chapter 19 Maintenance Figure 104 System Status...
Страница 224: ...Prestige 2602R Series User s Guide 224 Chapter 19 Maintenance...
Страница 234: ...Prestige 2602R Series User s Guide 234 Chapter 21 Menu 1 General Setup...
Страница 238: ...Prestige 2602R Series User s Guide 238 Chapter 22 Menu 2 WAN Backup Setup...
Страница 242: ...Prestige 2602R Series User s Guide 242 Chapter 23 Menu 3 LAN Setup...
Страница 248: ...Prestige 2602R Series User s Guide 248 Chapter 24 Internet Access...
Страница 262: ...Prestige 2602R Series User s Guide 262 Chapter 26 Static Route Setup...
Страница 266: ...Prestige 2602R Series User s Guide 266 Chapter 27 Bridging Setup...
Страница 282: ...Prestige 2602R Series User s Guide 282 Chapter 28 Network Address Translation NAT...
Страница 312: ...Prestige 2602R Series User s Guide 312 Chapter 32 System Information and Diagnosis...
Страница 324: ...Prestige 2602R Series User s Guide 324 Chapter 33 Firmware and Configuration File Maintenance...
Страница 330: ...Prestige 2602R Series User s Guide 330 Chapter 34 System Maintenance...
Страница 334: ...Prestige 2602R Series User s Guide 334 Chapter 35 Remote Management...
Страница 346: ...Prestige 2602R Series User s Guide 346 Chapter 37 Call Scheduling...
Страница 358: ...Prestige 2602R Series User s Guide 358 Chapter 38 Troubleshooting...
Страница 388: ...Prestige 2602R Series User s Guide 388 Appendix D IP Subnetting...
Страница 392: ...Prestige 2602R Series User s Guide 392 Appendix E Triangle Route...
Страница 394: ...Prestige 2602R Series User s Guide 394 Appendix F SIP Passthrough...
Страница 420: ...Prestige 2602R Series User s Guide 420 Appendix G Internal SPTGEN...
Страница 422: ...Prestige 2602R Series User s Guide 422 Appendix H Command Interpreter...
Страница 424: ...Prestige 2602R Series User s Guide 424 Appendix I Firewall Commands...
Страница 438: ...Prestige 2602R Series User s Guide 438 Appendix K Log Descriptions...